CN215979519U - Two-stage boosting heat supply system based on steam booster - Google Patents
Two-stage boosting heat supply system based on steam booster Download PDFInfo
- Publication number
- CN215979519U CN215979519U CN202122567721.9U CN202122567721U CN215979519U CN 215979519 U CN215979519 U CN 215979519U CN 202122567721 U CN202122567721 U CN 202122567721U CN 215979519 U CN215979519 U CN 215979519U
- Authority
- CN
- China
- Prior art keywords
- turbine
- steam
- pressure cylinder
- pipeline
- booster
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a two-stage boosting heat supply system based on a turbine, which comprises a turbine high-pressure cylinder, wherein the turbine high-pressure cylinder is connected with a turbine intermediate-pressure cylinder through a pipeline, the turbine high-pressure cylinder and the turbine intermediate-pressure cylinder are connected through a pipeline, one pipeline is connected with a water spray desuperheater, the water spray desuperheater is connected with a primary turbine through a pipeline, the primary turbine is connected with a secondary turbine through a pipeline, the secondary turbine is connected with a secondary turbine condenser through a pipeline, the turbine intermediate-pressure cylinder is connected with a turbine low-pressure cylinder through a pipeline, and the turbine low-pressure cylinder is connected with the secondary turbine through a pipeline. The reheating steam and the exhaust steam are used for heat supply through two-stage boosting of the steam booster, so that the heat supply capacity of the unit is improved, the steam quantity entering the steam turbine for applying work is reduced, the power generation load of the unit is reduced, and deep peak regulation is realized.
Description
Technical Field
The utility model relates to the field of heat supply, in particular to a two-stage boosting heat supply system based on a steam booster.
Background
Under the policy of double carbon, related national departments require coal-fired thermal power plants to gradually have the deep peak regulation capacity of 20% of rated power generation load in order to promote new energy consumption. Meanwhile, a coal-fired thermal power plant (hereinafter referred to as a thermal power plant) which is responsible for heat supply needs to meet the basic heat supply requirement of an urban heat network while participating in deep peak shaving.
The steam power plant is generally provided with an extraction condensing unit, and heat is supplied to the outside by using extraction steam (hereinafter referred to as heating steam) of a steam turbine, but the heat supply and the power generation have a coupling relation. When the heat supply load of the thermal power plant is large, the demand for heat supply steam is also large, and finally the power generation load is high. Because the amount of heat supply steam is large, the amount of steam entering a high-pressure cylinder and a medium-pressure cylinder of the steam turbine is large, the work of the steam turbine is more, and the generating load of the unit is high. On the contrary, if the power generation load of the thermal power plant is low, the amount of the heating steam is relatively small, and finally the heating capacity is reduced.
In the heating season, if the heat supply capacity of the thermal power plant is required to meet the requirement of a heat supply network, the power generation load at least reaches over 50 percent of rated load and greatly exceeds the required peak load. If the power generation load of the thermal power plant meets the requirement of peak load regulation, namely 20% of rated power generation load, the heat supply steam quantity provided by the steam turbine is small, and the heat supply capacity of the unit can not meet the requirement of a heat supply network.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In view of the defects in the prior art, the present invention provides a two-stage boosting heating system based on a steam booster to solve the problems in the background art.
(II) technical scheme
In order to solve the problems in the background art, the utility model adopts the following specific technical scheme:
a two-stage boosting heat supply system based on a turbine comprises a turbine high-pressure cylinder, wherein the turbine high-pressure cylinder is connected with a turbine intermediate-pressure cylinder through a pipeline, the turbine high-pressure cylinder and the turbine intermediate-pressure cylinder are connected through a pipeline, one pipeline is connected with a water spray desuperheater, the water spray desuperheater is connected with a primary turbine through a pipeline, the primary turbine is connected with a secondary turbine through a pipeline, and the secondary turbine is connected with a secondary turbine condenser through a pipeline;
the steam turbine intermediate pressure jar has steam turbine low pressure jar through the pipe connection, steam turbine low pressure jar is connected with second grade turbine that increases through the pipeline.
Further, for the steam turbine intermediate pressure cylinder and the steam turbine low pressure cylinder, a pipeline for connecting the steam turbine intermediate pressure cylinder and the steam turbine low pressure cylinder is provided with a medium-low pressure cylinder communicating valve, a pipeline is led to be connected with the first-stage steam booster in front of the medium-low pressure cylinder communicating valve, and a pipeline led to be connected with the medium-low pressure cylinder communicating valve is provided with a first-stage steam booster suction steam valve.
Further, for the steam turbine high-pressure cylinder and the steam turbine intermediate-pressure cylinder, a pipeline for connecting the steam turbine high-pressure cylinder and the steam turbine intermediate-pressure cylinder is provided with an intermediate regulating valve.
Further, for the water spray desuperheater and the primary steam turbine, a primary steam turbine power steam valve is arranged on a pipeline connecting the water spray desuperheater and the primary steam turbine.
Further, for the low-pressure cylinder and the secondary turbine, a pipeline connecting the low-pressure cylinder and the secondary turbine is provided with a secondary turbine suction steam valve.
(III) advantageous effects
Compared with the prior art, the utility model provides a two-stage boosting heat supply system based on a steam booster, which has the following beneficial effects:
(1) the utility model aims to provide a two-stage boosting heat supply system based on a steam booster, which uses both reheated steam and exhaust steam for heat supply through the two-stage boosting function of the steam booster, thereby improving the heat supply capacity of a unit.
(2) The utility model aims to provide a two-stage boosting heat supply system based on a steam booster, which reduces the amount of steam entering a steam turbine to do work, reduces the generating load of a unit and realizes the deep peak regulation target.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram of a main structure of a two-stage booster heating system based on a steam booster according to an embodiment of the utility model.
In the figure:
1. a high-pressure cylinder of the steam turbine; 2. a turbine intermediate pressure cylinder; 3. a low-pressure cylinder of the steam turbine; 4. a communication valve of the medium and low pressure cylinder; 5. a middle adjusting door; 6. a water spray desuperheater; 7. a first-stage steam booster power steam valve; 8. a first-stage steam booster; 9. a first-stage steam booster suction steam valve; 10. a second-stage steam booster suction steam valve; 11. a secondary turbine; 12. and a secondary turbine condenser.
Detailed Description
For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the utility model, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.
According to the embodiment of the utility model, a two-stage boosting heating system based on a steam booster is provided.
The present invention is further described with reference to the accompanying drawings and the detailed description, and as shown in fig. 1, according to an embodiment of the present invention, a two-stage boosting heat supply system based on a steam turbine includes a steam turbine high pressure cylinder 1, the steam turbine high pressure cylinder 1 is connected to a steam turbine intermediate pressure cylinder 2 through a pipeline, a pipeline connecting the steam turbine high pressure cylinder 1 and the steam turbine intermediate pressure cylinder 2 is connected to a water spray desuperheater 6, the water spray desuperheater 6 is connected to a first-stage steam turbine 8 through a pipeline, the first-stage steam turbine 8 is connected to a second-stage steam turbine 11 through a pipeline, and the second-stage steam turbine 11 is connected to a second-stage steam turbine condenser 12 through a pipeline;
the steam turbine intermediate pressure cylinder 2 is connected with a steam turbine low pressure cylinder 3 through a pipeline, and the steam turbine low pressure cylinder 3 is connected with a secondary turbine booster 11 through a pipeline.
In a new embodiment, for the steam turbine intermediate pressure cylinder 2 and the steam turbine low pressure cylinder 3, a pipeline connecting the steam turbine intermediate pressure cylinder 2 and the steam turbine low pressure cylinder 3 is provided with an intermediate and low pressure cylinder communicating valve 4, a pipeline leading in front of the intermediate and low pressure cylinder communicating valve 4 is connected with the primary turbine 8, and a pipeline leading in front of the intermediate and low pressure cylinder communicating valve 4 is provided with a primary turbine suction steam valve 9.
In a new embodiment, for the high-pressure turbine cylinder 1 and the intermediate-pressure turbine cylinder 2, the pipeline connecting the high-pressure turbine cylinder 1 and the intermediate-pressure turbine cylinder 2 is provided with an intermediate-regulating valve 5.
In a new embodiment, for the water spray desuperheater 6 and the primary steam booster 8, the pipeline connecting the water spray desuperheater 6 and the primary steam booster 8 is provided with a primary steam booster power steam valve 7.
In a new embodiment, for the low pressure turbine cylinder 3 and the two-stage turbine 11, the pipeline connecting the low pressure turbine cylinder 3 and the two-stage turbine 11 is provided with a two-stage turbine suction steam valve 10.
In practical application, a steam pipeline is led from a reheating section steam pipeline in front of the intermediate regulating valve 5 and is connected to a primary turbine booster 8 through a water spraying desuperheater 6 and a primary turbine booster power steam valve 7; a middle exhaust steam pipeline in front of the middle and low pressure cylinder communicating valve 4 is led to be connected with a steam pipeline, and is connected to a first-stage steam booster 8 through a first-stage steam booster suction steam valve 9; the exhaust steam of the first-stage steam booster 8 is connected into a second-stage steam booster 11;
leading one path of steam pipeline from the low-pressure cylinder steam exhaust pipeline, sucking the steam from a steam valve 10 through a secondary steam turbine 11, and connecting the steam to the secondary steam turbine 11; the exhaust steam of the secondary turbine booster 11 is connected to a secondary turbine booster condenser 12, and the steam heats the circulating water of the heat supply network in the condenser.
For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.
In summary, according to the above technical solution of the present invention, in the heating season when the heating unit is operating under peak load, the intermediate throttle 5 is adjusted, and the reheat steam is extracted from the reheat section steam pipeline as the power steam of the primary steam booster 8. Because the temperature of the reheated steam is higher, the requirement on the material of the material is high, and therefore the steam is sprayed with water for cooling. The reheated steam is cooled by the water spray desuperheater 6 and then is introduced into a power steam port of the first-stage steam booster 8 to be used as power steam. One path of steam is led from the middle exhaust steam pipeline and is led into a suction steam port of a first-stage steam booster 8 through a first-stage steam booster suction steam valve 9 to be used as the injected steam which is hereinafter referred to as suction steam.
The power steam forms high-speed jet flow after passing through the nozzle in the primary steam booster 8, and the pressure energy of the power steam is converted into kinetic energy. Under the injection action, the sucked steam is sucked into the receiving chamber, and the two streams of steam exchange energy in the primary steam booster. The speed of the sucked steam is increased, and the steam and the power steam are generated into mixed steam which is then discharged from a steam outlet of the primary steam increasing machine 8, and the temperature and the pressure of the generated mixed steam are higher than those of the sucked steam.
The mixed steam is directly introduced into the secondary turbine 11 and is used as the power steam of the secondary turbine 11. The power steam forms high-speed jet flow after passing through the nozzle in the secondary steam booster, and the pressure energy of the power steam is converted into kinetic energy. Under the injection action, the exhaust steam is sucked into the receiving chamber, and the two streams of steam exchange energy in the secondary steam booster 11. The speed of the exhaust steam is increased, and the exhaust steam and the power steam are generated into mixed steam which is then discharged from a steam outlet of the secondary steam increasing machine 11, and the temperature and the pressure of the generated mixed steam are higher than those of the exhaust steam. The mixed steam is connected into a secondary turbine condenser 12, and the steam heats the circulating water of a heat supply network in the condenser for heat supply.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A two-stage boosting heat supply system based on a turbine is characterized by comprising a turbine high-pressure cylinder (1), wherein the turbine high-pressure cylinder (1) is connected with a turbine intermediate-pressure cylinder (2) through a pipeline, the turbine high-pressure cylinder (1) is connected with the turbine intermediate-pressure cylinder (2) through a pipeline, one pipeline is connected with a water spray desuperheater (6), the water spray desuperheater (6) is connected with a primary turbine (8) through a pipeline, the primary turbine (8) is connected with a secondary turbine (11) through a pipeline, and the secondary turbine (11) is connected with a secondary turbine condenser (12) through a pipeline;
the steam turbine intermediate pressure cylinder (2) is connected with a steam turbine low pressure cylinder (3) through a pipeline, and the steam turbine low pressure cylinder (3) is connected with a secondary turbine booster (11) through a pipeline.
2. A two-stage booster-based heating system according to claim 1, wherein a pipeline connecting the turbine intermediate pressure cylinder (2) and the turbine low pressure cylinder (3) is provided with a medium-low pressure cylinder communication valve (4), a pipeline leading in front of the medium-low pressure cylinder communication valve (4) is connected with the one-stage booster (8), and a pipeline leading in front of the medium-low pressure cylinder communication valve (4) is provided with a one-stage booster suction steam valve (9).
3. A two-stage booster heating system according to claim 1, characterised in that the piping connecting the high turbine pressure cylinder (1) and the intermediate turbine pressure cylinder (2) is provided with an intermediate damper (5).
4. A two-stage booster-based heating system according to claim 1, wherein the pipeline connecting the water spray desuperheater (6) and the one-stage booster (8) is provided with a one-stage booster power steam valve (7).
5. A two-stage booster-based heating system according to claim 1, wherein the piping connecting the low-pressure turbine cylinder (3) and the two-stage booster (11) is provided with a two-stage booster suction steam valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122567721.9U CN215979519U (en) | 2021-10-25 | 2021-10-25 | Two-stage boosting heat supply system based on steam booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122567721.9U CN215979519U (en) | 2021-10-25 | 2021-10-25 | Two-stage boosting heat supply system based on steam booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215979519U true CN215979519U (en) | 2022-03-08 |
Family
ID=80510797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122567721.9U Active CN215979519U (en) | 2021-10-25 | 2021-10-25 | Two-stage boosting heat supply system based on steam booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215979519U (en) |
-
2021
- 2021-10-25 CN CN202122567721.9U patent/CN215979519U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112855293B (en) | Integrated heat storage industrial steam supply cogeneration peak shaving frequency modulation system and operation method | |
| CN108361086B (en) | Energy-saving thermoelectric decoupling system and operation method | |
| CN108035776B (en) | Thermoelectric decoupling system and operation method | |
| CN110145376B (en) | Boiler and steam turbine decoupling system based on increase steam turbine | |
| CN110701663A (en) | Injection type heat pump exhaust steam recovery heat supply mode and system based on complete thermoelectric decoupling | |
| CN112856544B (en) | Method and system for improving flexibility of thermoelectric unit by combining exhaust gas waste heat recovery and heat storage | |
| CN112856363B (en) | System and method for improving heat supply steam parameters of deep peak shaving heat supply unit | |
| CN210858830U (en) | Injection gas distribution depth thermoelectric decoupling system based on axial thrust balance | |
| CN210801355U (en) | Thermoelectric decoupling system based on multistage injection type gas distribution and heat pump exhaust steam recovery | |
| CN113336289B (en) | Water-heat-electricity cogeneration system with wide-load operation of power plant and operation method | |
| CN114046186A (en) | High-flexibility high-thermoelectric-ratio composite thermal mass bypass heating system | |
| CN212408812U (en) | Thermoelectric decoupling system | |
| CN215979519U (en) | Two-stage boosting heat supply system based on steam booster | |
| CN114837757B (en) | High-water-adding bypass frequency modulation system of thermal power plant provided with steam ejector and working method | |
| CN216554044U (en) | 600MW unit steam-heat output integrated device | |
| CN113280390B (en) | Deep peak regulation heat supply grade improving system and method based on heat pump boosting reheating | |
| CN113464225B (en) | System and method for wide load operation of power plant with two-stage steam ejector | |
| CN111828115A (en) | High-low pressure cutting cylinder thermoelectric decoupling mode and system based on exhaust steam built-in group spraying injection | |
| CN212337395U (en) | Injection type heat pump with integrated injection tube bundle and condenser built in low-pressure cylinder exhaust pipe | |
| CN217029041U (en) | Steam-driven heat supply network circulating water pump steam supply system based on steam booster | |
| CN204786684U (en) | Wide load of little steam turbine of backpressure formula drive water -feeding pump supplies heat energy -saving system | |
| CN216306037U (en) | Two-time injection step heating system based on steam turbine increasing technology | |
| CN215718997U (en) | Thermoelectric decoupling heating system based on steam booster | |
| CN102392700A (en) | Novel backpressure turbine with low vacuum regenerative heat | |
| CN219976369U (en) | Flexible heating system of double-pressure combined cycle unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |